Improvement in sectional steam-boilers



UNITED STATES PATNT OFFICE.

JOHNF. TAYLOR. OF CHARLESTON, SOUTH CAROLINA,

IMPROVEMENT IN sEcTloNAL STEAM-Bodens.

Specification forming partof'Letters Patent No. l 58.7511, dated January 12, 1875; application filed october ze, 1874.

To all whom it may concern: Be it known that I, JOHN F. TAYLOR, of the city and county of Charleston and State et' South Carolina, haveinvented a new and i Improved Combined Cylinder and Sectional Boiler; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had to the accompanying drawing,"for1ning a part of this speciiication, in which- Figure 1 is 'a sectional side elevation; Fig.

y 2, a transverse vertical section through line .c w; Figs. 3 and 4, detail views ot the tubes. The object Iof my invention is to provide a steamboiler in which the superior advantages of a cylinder-boiler are retained, while theobjection to it, arising from the waste of "heat, are obviated. It consists in combining nace being .so directed among the portions of the sectional boiler as to secure the greatest possible ei'ective power of the fuel.

In the. drawing, A represents the wroughtirony cylinder-boiler. tional boiler, which encompasses the cylinderboiler. The said sectional boiler is constructed of the east pipes or tubes C, which are bolted tightly together by the rods C2, the said tubes having; at each end a cylindrical section at right angles to the tubes, for the purpose of forming, when bolted together, a continuous v pipe communicating with all of the tubes. F

is the furnace-grate, E, the bridge-wall, and

l D the diaphragm for directing the draft from the furnace through the sectional boiler. G

`are the feed-pipes, through which the water is introduced into the sectional boiler, and H e are the pipes that connect the sectional with the cylinder boiler, and through which the said cylinder ,is supplied with water already heated. These pipes H pass down through the cylinder-boiler and open into the bottoni of the same below the water-line, so thtt the feed-water does not come in Vcontact with -the steam. 'K are pipes, having downwardly- 'openingcheck-valves I, that allow the passage B is the cast-iron seef of the water from the cylinder to the sectional boiler, but oppose its passage in a reverse direction.

The object of 'the downwardl y-openin g valve in pipe K is to insure the feeding of the cylinder-boiler from the highest point ofthe sectional boiler, where the water is the hottest, and yet to allow a circulation of water from the said cylinder to the sectional boiler, if, in any. event, the water in the cylinder-boiler becomes higher in the saine than in the sectional boiler. This condition may occur under the following circumstances: If the feed-pumps Vare stopped, or fail to supply the sectional yboiler with water as fast as it is evaporated in the-same, the heating-sudace ot" the sectional boiler beingin proportion to. the amount ot' water contained greater than the cylinderboiler, the water would fall in the former much more rapidly than it would in the latter; or, in. thev event of a suddengeneration of a large body of steam in the sectional boiler, the entire contents ofthe same may be forced into the cylinder-boiler, andl the pipesy of the sectional boiler burnin consequence thereof. The downwardly-opening valves are intended to obviate this difficulty, by allowinga circulation from thevcylinderto the' sectional boiler in either of the above emefgneies.'v l

Experience proves 7 that ycylinder boilers make more steam per square foot of heatingsurfacev than anylother ordinary boiler; that they are less liable to injury or accident from shortness of water, and can be made stronger 'and more durable'.

The objection to cylinder-boilers hitherto has been that the waste of fuel' is very great,

. owing, mainly, to the shortness and` directness `of the ue,the absorption of the heat by the masonry, and the. reduction of the steam by the introduction of cold feed-water directly into the body of the boiler. y

It will be observed that, while I have preserved all oftheadvantages of a cylinderboiler, I have also obviated all of the abovedescribed objections to the. same, by making 'the flue more tortuous, and thereby utilizing -a greater portion ot the heat, and also by combining with the cylinder-boiler aseetional boiler, which takes the place of the masonry, and utilizes heat which would otherwisebc lost, by raising the temperature of f the feedwater almost to that 'of the Water in the boiler proper before introducing the same, thus increasing the effective power of the steam-gen- WardIy-opening valves I, substantially as Imd for the purpose described.

2. The cylinder-boiler A, in combination lwith the pipesH andK, the valves I, and the sectional cast-iron boiler B, constructed, as described, of the tubes C, arranged as shown, the rods O2, and the diaphragms D, substantially as and for the purpose described.

JOHN F. TAYLOR.

Witnesses:

JAMES CONNER, J. N. MCGIBBON. 

